【国外标准】 Standard Specification for Castings, Zirconium-Base, Corrosion Resistant, for General Application

This specification covers zirconium and zirconium-alloy castings for general corrosion-resistant and industrial applications. Material for this specification shall be melted by conventional processes used for reactive metals. Typical methods include the consumable electrode and inductoslag melting processes. The material shall conform to the required chemical composition for zirconium, hafnium, iron, chromium, hydrogen, nitrogen, carbon, oxygen, phosphorus, tin, and niobium. Product analysis and heat treatment shall be performed on the material, and shall conform within the specified check analysis tolerances.1.1 This specification covers zirconium and zirconium-alloy castings for general corrosion-resistant and industrial applications.1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of each other. Combining values from the two systems may result in nonconformance with this specification.1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.